Added 11 solutions

2017-03-24 00:02:30 -05:00
parent 8239026cea
commit 5f4c2f4a78
26 changed files with 558 additions and 120 deletions
@@ -176,17 +176,17 @@ public class Solution {
            HashSet<Integer> uNeighbors = map.get(u);
            if (uNeighbors == null) {                
                uNeighbors = new HashSet<>();
+                map.put(u, uNeighbors);
            }
            uNeighbors.add(v);
-            map.put(u, uNeighbors);
            
            /* Edges are undirected: Add 2nd direction */
            HashSet<Integer> vNeighbors = map.get(v);
            if (vNeighbors == null) {
                vNeighbors = new HashSet<>();
+                map.put(v, vNeighbors);
            }
            vNeighbors.add(u);
-            map.put(v, vNeighbors);
        }
        scan.close();